<script setup>
import { ref, onMounted } from 'vue'
import { queryPageApi, queryDeptListApi, addApi, queryByIdApi, updateApi, deleteByIdApi, queryRoleListApi, uploadApi } from '@/api/user'
import { ElMessage, ElMessageBox } from 'element-plus'
import { Search, Refresh, Plus, Delete, Edit, UserFilled, Upload } from '@element-plus/icons-vue'

const token = ref('')
onMounted(() => {
  search()
  loadDeptList()
  loadRoleList()
  // 获取token
  token.value = localStorage.getItem('token')
})

// 查询参数
const queryParams = ref({
  name: '',
  phone: '',
  deptId: '',
  status: '',
  page: 1,
  pageSize: 10
})

// 表格数据
const userList = ref([])
const total = ref(0)

// 多选相关
const multipleSelection = ref([])

// 部门列表
const deptList = ref([])

// 角色列表
const roleList = ref([])

// 动态加载数据
const search = async () => {
  const result = await queryPageApi(queryParams.value);
  if (result.code == 1) {
    userList.value = result.data.rows;
    total.value = result.data.total;
  }
}

// 加载部门列表
const loadDeptList = async () => {
  const result = await queryDeptListApi();
  if (result.code == 1) {
    deptList.value = result.data;
  }
}

// 加载角色列表
const loadRoleList = async () => {
  const result = await queryRoleListApi();
  if (result.code == 1) {
    roleList.value = result.data;
  }
}

// 清空
const clear = () => {
  queryParams.value = { name: '', phone: '', deptId: '', status: '', page: 1, pageSize: 10 }
  search()
}

// 分页大小改变
const handleSizeChange = (val) => {
  search()
}

// 页码改变
const handleCurrentChange = (val) => {
  search()
}

// 对话框相关
const formTitle = ref('')
const dialogFormVisible = ref(false)
const formLabelWidth = '100px'
const user = ref({
  username: '',
  name: '',
  phone: '',
  email: '',
  gender: '',
  status: '',
  deptId: '',
  roleId: '',
  image: '',
  remark: ''
})

// 表单校验规则
const userFormRef = ref(null)
const rules = ref({
  username: [
    { required: true, message: '用户名为必填项', trigger: 'blur' },
    { min: 2, max: 20, message: '用户名应该在2-20位之间', trigger: 'blur' }
  ],
  name: [
    { required: true, message: '姓名为必填项', trigger: 'blur' },
    { min: 2, max: 20, message: '姓名应该在2-20位之间', trigger: 'blur' }
  ],
  phone: [
    { required: true, message: '手机号为必填项', trigger: 'blur' },
    { pattern: /^1[3-9]\d{9}$/, message: '请输入正确的手机号', trigger: 'blur' }
  ],
  email: [
    { required: true, message: '邮箱为必填项', trigger: 'blur' },
    { min: 5, max: 50, message: '邮箱应该在5-50位之间', trigger: 'blur' },
    { type: 'email', message: '请输入正确的邮箱格式', trigger: 'blur' }
  ],
  gender: [
    { required: true, message: '性别为必填项', trigger: 'blur' }
  ],
  status: [
    { required: true, message: '状态为必填项', trigger: 'blur' }
  ]
})

// 添加用户
const handleAdd = () => {
  dialogFormVisible.value = true
  formTitle.value = '新增用户'
  user.value = {
    username: '',
    name: '',
    phone: '',
    email: '',
    gender: '',
    status: '',
    deptId: '',
    roleId: '',
    image: '',
    remark: ''
  }
  if (userFormRef.value) {
    userFormRef.value.resetFields()
  }
}

// 保存用户
const save = async () => {
  userFormRef.value.validate(async (valid) => {
    if (valid) {
      // 设置默认密码
      if (!user.value.id) {
        user.value.password = user.value.username + '123'
      }

      let result;
      if (user.value.id) {
        result = await updateApi(user.value);
      } else {
        result = await addApi(user.value);
      }

      if (result.code == 1) {
        ElMessage.success('保存成功')
        dialogFormVisible.value = false
        search()
      } else {
        ElMessage.error(result.msg)
      }
    } else {
      ElMessage.error('请填写正确的数据')
    }
  })
}

// 修改用户
const handleEdit = async (id) => {
  const result = await queryByIdApi(id)
  if (result.code == 1) {
    dialogFormVisible.value = true
    formTitle.value = '修改用户'
    user.value = result.data
    if (userFormRef.value) {
      userFormRef.value.resetFields()
    }
  } else {
    ElMessage.error(result.msg)
  }
}

// 删除用户
const handleDelete = async (id) => {
  ElMessageBox.confirm('您确认要删除该用户吗？', '提示', {
    confirmButtonText: '确定',
    cancelButtonText: '取消',
    type: 'warning'
  }).then(async () => {
    const result = await deleteByIdApi(id)
    if (result.code == 1) {
      ElMessage.success('删除成功')
      search()
    } else {
      ElMessage.error(result.msg)
    }
  }).catch(() => {
    ElMessage.info('已取消删除')
  })
}

// 多选变化处理
const handleSelectionChange = (selection) => {
  multipleSelection.value = selection
}

// 批量删除
const handleBatchDelete = async () => {
  if (multipleSelection.value.length === 0) {
    ElMessage.warning('请选择要删除的用户')
    return
  }
  
  const ids = multipleSelection.value.map(item => item.id).join(',')
  
  ElMessageBox.confirm(`您确认要删除选中的 ${multipleSelection.value.length} 个用户吗？`, '提示', {
    confirmButtonText: '确定',
    cancelButtonText: '取消',
    type: 'warning'
  }).then(async () => {
    const result = await deleteByIdApi(ids)
    if (result.code == 1) {
      ElMessage.success('批量删除成功')
      multipleSelection.value = []
      search()
    } else {
      ElMessage.error(result.msg)
    }
  })
}

// 文件上传相关
const uploadRef = ref(null)
// 上传成功处理
const handleUploadSuccess = (response) => {
  if (response.code == 1) {
    user.value.image = response.data
    ElMessage.success('上传成功')
  } else {
    ElMessage.error(response.msg)
  }
}

// 上传失败处理
const handleUploadError = (error) => {
  ElMessage.error('上传失败')
}

// 上传前校验
const beforeUpload = (file) => {
  const isImage = file.type === 'image/jpeg' || file.type === 'image/png' || file.type === 'image/jpg'
  const isLt2M = file.size / 1024 / 1024 < 2

  if (!isImage) {
    ElMessage.error('上传头像图片只能是 PNG/JPG/JPEG 格式!')
    return false
  }
  if (!isLt2M) {
    ElMessage.error('上传头像图片大小不能超过 2MB!')
    return false
  }
  return true
}

// 移除头像
const handleAvatarRemove = () => {
  user.value.image = ''
}
</script>

<template>
  <div class="user-management">

    <!-- 搜索区域 -->
    <el-form :inline="true" :model="queryParams" ref="queryForm" class="search-form">
      <el-form-item label="姓名:">
        <el-input v-model="queryParams.name" placeholder="请输入姓名"  :style="{ border: '1px solid #dcdfe6' }"/>
      </el-form-item>
      <el-form-item label="手机号:">
        <el-input v-model="queryParams.phone" placeholder="请输入手机号"  :style="{ border: '1px solid #dcdfe6' }"/>
      </el-form-item>
      <el-form-item label="部门:">
        <el-select v-model="queryParams.deptId" placeholder="请选择" clearable style="width: 100%">
          <el-option 
            v-for="dept in deptList" 
            :key="dept.id" 
            :label="dept.name" 
            :value="dept.id" 
          />
        </el-select>
      </el-form-item>
      <el-form-item label="状态:">
        <el-select v-model="queryParams.status" placeholder="请选择" clearable style="width: 100%">
          <el-option label="正常" :value="1" />
          <el-option label="停用" :value="0" />
        </el-select>
      </el-form-item>
      <el-form-item class="search-buttons">
        <el-button type="primary" @click="search">
          <el-icon><Search /></el-icon>搜索
        </el-button>
        <el-button @click="clear">
          <el-icon><Refresh /></el-icon>清空
        </el-button>
      </el-form-item>
    </el-form>

    <!-- 操作按钮区域 -->
    <div class="operation-area">
      <el-button type="primary" @click="handleAdd">
        <el-icon><Plus /></el-icon>添加用户
      </el-button>
      <el-button type="danger" @click="handleBatchDelete" :disabled="multipleSelection.length === 0">
        <el-icon><Delete /></el-icon>批量删除
      </el-button>
    </div>

    <!-- 表格区域 -->
    <el-table :data="userList" style="width: 100%" border @selection-change="handleSelectionChange">
      <el-table-column type="selection" :width="55" align="center" />
      <el-table-column prop="name" label="姓名" :width="120" align="center" />
      <el-table-column prop="username" label="用户名" :width="150" align="center" />
      <el-table-column label="头像" :width="100" align="center">
        <template #default="scope">
          <el-avatar 
            :size="40" 
            :src="scope.row.image" 
            :icon="UserFilled"
            v-if="scope.row.image"
          />
          <el-avatar 
            :size="40" 
            :icon="UserFilled"
            v-else
          />
        </template>
      </el-table-column>
      <el-table-column prop="deptName" label="部门" :width="150" align="center" />
      <el-table-column prop="roleName" label="角色" :width="150" align="center" />
      <el-table-column prop="phone" label="手机号" :width="150" align="center" />
      <el-table-column prop="status" label="状态" :width="100" align="center">
        <template #default="scope">
          <el-tag :type="scope.row.status === 1 ? 'success' : 'danger'">
            {{ scope.row.status === 1 ? '正常' : '停用' }}
          </el-tag>
        </template>
      </el-table-column>
      <el-table-column prop="updateTime" label="最后操作时间" :width="180" align="center" />
      <el-table-column label="操作" align="center">
        <template #default="scope">
          <el-button type="primary" link @click="handleEdit(scope.row.id)">
            <el-icon><Edit /></el-icon>修改
          </el-button>
          <el-button type="danger" link @click="handleDelete(scope.row.id)">
            <el-icon><Delete /></el-icon>删除
          </el-button>
        </template>
      </el-table-column>
    </el-table>

    <!-- 分页区域 -->
    <div class="pagination">
      <el-pagination 
        v-model:current-page="queryParams.page" 
        v-model:page-size="queryParams.pageSize"
        :page-sizes="[10, 20, 30, 40, 50]" 
        layout="total, sizes, prev, pager, next, jumper" 
        :total="total"
        @size-change="handleSizeChange" 
        @current-change="handleCurrentChange" 
      />
    </div>

    <!-- 新增用户 / 修改用户 对话框 -->
    <el-dialog v-model="dialogFormVisible" :title="formTitle" width="700px">
      <el-form :model="user" :rules="rules" ref="userFormRef" label-width="100px">
        <el-row :gutter="20">
          <el-col :span="12">
            <el-form-item label="用户名:" prop="username">
              <el-input v-model="user.username" placeholder="请输入用户名" />
            </el-form-item>
          </el-col>
          <el-col :span="12">
            <el-form-item label="姓名:" prop="name">
              <el-input v-model="user.name" placeholder="请输入姓名" />
            </el-form-item>
          </el-col>
        </el-row>
        
        <el-row :gutter="20">
          <el-col :span="12">
            <el-form-item label="手机号:" prop="phone">
              <el-input v-model="user.phone" placeholder="请输入手机号" />
            </el-form-item>
          </el-col>
          <el-col :span="12">
            <el-form-item label="邮箱:" prop="email">
              <el-input v-model="user.email" placeholder="请输入邮箱" />
            </el-form-item>
          </el-col>
        </el-row>
        
        <el-row :gutter="20">
          <el-col :span="12">
            <el-form-item label="性别:" prop="gender">
              <el-select v-model="user.gender" placeholder="请选择" style="width: 100%">
                <el-option label="男" :value="1" />
                <el-option label="女" :value="0" />
              </el-select>
            </el-form-item>
          </el-col>
          <el-col :span="12">
            <el-form-item label="状态:" prop="status">
              <el-select v-model="user.status" placeholder="请选择" style="width: 100%">
                <el-option label="正常" :value="1" />
                <el-option label="停用" :value="0" />
              </el-select>
            </el-form-item>
          </el-col>
        </el-row>
        
        <el-row :gutter="20">
          <el-col :span="12">
            <el-form-item label="部门:">
              <el-select v-model="user.deptId" placeholder="请选择" clearable style="width: 100%">
                <el-option 
                  v-for="dept in deptList" 
                  :key="dept.id" 
                  :label="dept.name" 
                  :value="dept.id" 
                />
              </el-select>
            </el-form-item>
          </el-col>
          <el-col :span="12">
            <el-form-item label="角色:">
              <el-select v-model="user.roleId" placeholder="请选择" clearable style="width: 100%">
                <el-option 
                  v-for="role in roleList" 
                  :key="role.id" 
                  :label="role.name" 
                  :value="role.id" 
                />
              </el-select>
            </el-form-item>
          </el-col>
        </el-row>
        
        <el-form-item label="头像:">
          <el-upload
            ref="uploadRef"
            class="avatar-uploader"
            :show-file-list="false"
            :before-upload="beforeUpload"
            action="/api/upload"
            name="image"
            :headers="{ 'token': token }"
            :on-success="handleUploadSuccess"
            :on-error="handleUploadError"
            :loading="uploadLoading"
          >
            <div class="avatar-upload-area">
              <el-avatar 
                v-if="user.image" 
                :src="user.image" 
                :size="80"
                @error="handleAvatarRemove"
              />
              <div v-else class="avatar-placeholder">
                <el-icon :size="30"><Upload /></el-icon>
                <div class="upload-text">点击上传</div>
              </div>
            </div>
          </el-upload>
          <div class="upload-tips">
            <p>图片上传,支持扩展名: .png/.jpg/.jpeg</p>
            <p>大小限制: 2M</p>
          </div>
        </el-form-item>
        
        <el-form-item label="备注说明:">
          <el-input 
            v-model="user.remark" 
            type="textarea" 
            :rows="3" 
            placeholder="请输入用户的备注信息,最多200字"
            maxlength="200"
            show-word-limit
          />
        </el-form-item>
      </el-form>

      <template #footer>
        <div class="dialog-footer">
          <el-button @click="dialogFormVisible = false">取消</el-button>
          <el-button type="primary" @click="save">确定</el-button>
        </div>
      </template>
    </el-dialog>

  </div>
</template>

<style scoped>
.user-management {
  padding: 20px;
  background-color: #fff;
  min-height: 100%;
  border-radius: 8px;
}

.operation-area {
  margin: 20px 0;
}

.operation-area .el-button {
  margin-right: 10px;
}

.search-form {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
}

.search-form :deep(.el-form-item) {
  margin-right: 20px;
  margin-bottom: 10px;
  min-width: 200px;
}

.search-buttons {
  margin-left: auto !important;
  min-width: auto !important;
}

.pagination {
  margin-top: 20px;
  display: flex;
  justify-content: flex-end;
}

.avatar-uploader {
  text-align: center;
}

.avatar-upload-area {
  display: inline-block;
  cursor: pointer;
}

.avatar-placeholder {
  width: 80px;
  height: 80px;
  border: 1px dashed #d9d9d9;
  border-radius: 6px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  color: #575353;
}

.avatar-placeholder:hover {
  border-color: #409eff;
}

.upload-text {
  font-size: 12px;
  margin-top: 5px;
}

.upload-tips {
  margin-top: 10px;
  font-size: 12px;
  color: #666;
}

.upload-tips p {
  margin: 2px 0;
}

:deep(.el-button .el-icon) {
  margin-right: 4px;
}

:deep(.el-dialog__body) {
  padding: 20px 30px;
}

:deep(.dialog-footer) {
  text-align: right;
}
</style>
